Another timely Paul Thurrott reality check; see the full post for more historical details
As for the Vista complaints of today, we might reflect for a moment on our short memories and remember that Windows XP, in just its first few months on the market, suffered from more problems that Vista has had in its entire lifetime so far. As with any major Windows release, Vista came with its share of compatibility and performance issues when compared to its predecessor (though those are almost completely resolved by now, of course). That's nothing new. But as XP heads off into a distant sunset, I prefer to be honest about that product. Yes, it was the best that Microsoft could do at the time and a big technical advance over the 9x versions of Windows. But Vista is the superior product, and that's especially true when you compare both XP and Vista with regards to the times in which they were respectively released.